ABAQUS ERROR: 480 elements have missing property definitions.

[adonis12]

The following error keeps occurring when I run the abaqus job that I have:
ERROR: 480 elements have missing property definitions. The elements have
been identified in element set ErrElemMissingSection.
What I have is a composite panel and stringer (both shell elements), a solid impactor, and solid cohesive elements. The cohesive elements are used to simulate delamination between the panel and stringers. The elements causing the error are the cohesive elements. Does anyone have any idea why this error may have happened? I have double checked and made sure that the sections have been assigned properly to all elements including the cohesive ones.
Your help is much appreciated, thank you in advance.

 

[IceBreakerSours]

This is a very common error. You should start by searching googling or searching the archives of this group.

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[Mustaine3]

Usually the section is not assigned.
And you should also check if you've really used cohesive elements for your cohesive section.

 

[adonis12]

Thank you guys, I forgot to assign an element type for the cohesive elements.